Major auxiliary sphere based on WGS 1984 - EPSG:4055

WKT

GEOGCS["GCS_WGS_1984_Major_Auxiliary_Sphere", 
	DATUM["D_WGS_1984_Major_Auxiliary_Sphere", 
		SPHEROID["WGS_1984_Major_Auxiliary_Sphere", 6378137.0, 0.0]], 
	PRIMEM["Greenwich", 0.0], 
	UNIT["Degree", 0.0174532925199433]]

WKT2

GEOGCRS["GCS_WGS_1984_Major_Auxiliary_Sphere", 
	DATUM["D_WGS_1984_Major_Auxiliary_Sphere", 
		ELLIPSOID["WGS_1984_Major_Auxiliary_Sphere", 6378137.0, 0.0]], 
	PRIMEM["Greenwich", 0.0], 
	CS[ellipsoidal, 2], 
	AXIS["Latitude (lat)", north, 
		ORDER[1]], 
	AXIS["Longitude (lon)", east, 
		ORDER[2]], 
	ANGLEUNIT["Degree", 0.0174532925199433], 
	ID["EPSG", "4055"]]

Data from @esri/proj-codes

{
  "wkid": 4055,
  "latestWkid": 4055,
  "macro": "PE_GCS_SPHERE_WGS_1984_MAJOR_AUXILIARY",
  "name": "GCS_WGS_1984_Major_Auxiliary_Sphere",
  "wkt": "GEOGCS[\"GCS_WGS_1984_Major_Auxiliary_Sphere\",DATUM[\"D_WGS_1984_Major_Auxiliary_Sphere\",SPHEROID[\"WGS_1984_Major_Auxiliary_Sphere\",6378137.0,0.0]],PRIMEM[\"Greenwich\",0.0],UNIT[\"Degree\",0.0174532925199433]]",
  "wkt2": "GEOGCRS[\"GCS_WGS_1984_Major_Auxiliary_Sphere\",DATUM[\"D_WGS_1984_Major_Auxiliary_Sphere\",ELLIPSOID[\"WGS_1984_Major_Auxiliary_Sphere\",6378137.0,0.0]],PRIMEM[\"Greenwich\",0.0],CS[ellipsoidal,2],AXIS[\"Latitude (lat)\",north,ORDER[1]],AXIS[\"Longitude (lon)\",east,ORDER[2]],ANGLEUNIT[\"Degree\",0.0174532925199433],ID[\"EPSG\",\"4055\"]]",
  "description": "Major auxiliary sphere based on WGS 1984",
  "authority": "EPSG",
  "version": "6.18.3(10.2.0)",
  "deprecated": "yes",
  "areaname": "World",
  "extent": {
    "slat": -90,
    "nlat": 90,
    "llon": -180,
    "rlon": 180
  }
}